Boosting the dynamic reconstitution of FeCu-N₄ sites via doping of bimetal nanoparticles during oxygen electrocatalysis

Peng, Jing1; Hu, Bihua1; Li, Zhitong1; Lei, Zhiwei1; Zhong, Xiongwei1; Wang, Xingzhu1,2; Xu, Baomin1

2023-12-11

10.1039/d3cy01308a

CATALYSIS SCIENCE & TECHNOLOGY   影响因子和分区

2044-4753

2044-4761

Dual metal atom catalysts with nitrogen coordination are emerging as promising materials that can be substituted for platinum group-based catalysts employed for the oxygen electroreduction reaction. Proper introduction of nanoparticles (NPs) in the presence of single atoms (SAs) to construct binuclear or multinuclear sites is conducive to tailoring the electronic configuration and further realizing moderate binding strength between catalytic sites and O-containing intermediates. In this work, a versatile route for synthesizing FeCu-N-4 sites with doping of small Fe and Cu bimetal nanoparticles co-encapsulated in nitrogen-doped porous carbon nanosheets (FeCuSNP@FeCuSA/NC) is provided for use as a bifunctional cathode catalyst in a zinc-air battery (ZAB). The experimental data and theoretical analysis indicate that the small Fe/Cu nanoparticles and FeCu SAs synergistically act to accelerate oxygen reduction reaction and oxygen evolution reaction activity under alkaline conditions. As a result, the obtained FeCuSNP@FeCuSA/NC displayed competitive half-wave potential (E-1/2 = 0.883 V vs. RHE) that is 36 and 15 mV higher than that of its Fe-SNP@Fe-SA/NC and Cu-SNP@Cu-SA/NC counterparts, respectively. In addition, the FeCuSNP@FeCuSA/NC-based ZAB exhibited a high specific discharge capacity of 808.8 mAh g(-1), maximum power density of 187.3 mW cm(-2) at 325.8 mA cm(-2), and excellent cycling stability at 10 mA cm(-2) (180 h).

SCI ; EI

英语

第一 ; 通讯

This work was supported by Key Fundamental Research Project funding from the Shenzhen Science and Technology Innovation Committee (Grant No. JCYJ20200109141014474 and JCYJ20220818100406014). We also would like to acknowledge technical support from the SUST["JCYJ20200109141014474","JCYJ20220818100406014"]

Chemistry

Chemistry, Physical

WOS:001105393700001

ROYAL SOC CHEMISTRY

20234815111569

Bimetals ; Binding sites ; Catalysts ; Coordination reactions ; Doping (additives) ; Electrocatalysis ; Electrolytic reduction ; Nitrogen ; Oxygen ; Oxygen reduction reaction ; Porous materials ; Synthesis (chemical) ; Zinc air batteries

Metallurgy and Metallography:531 ; Ore Treatment:533.1 ; Secondary Batteries:702.1.2 ; Nanotechnology:761 ; Biochemistry:801.2 ; Electrochemistry:801.4.1 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Solid State Physics:933 ; Materials Science:951

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.Shenzhen Putai Technol Co Ltd, Shenzhen 518110, Peoples R China

Peng, Jing,Hu, Bihua,Li, Zhitong,et al. Boosting the dynamic reconstitution of FeCu-N₄ sites via doping of bimetal nanoparticles during oxygen electrocatalysis[J]. CATALYSIS SCIENCE & TECHNOLOGY,2023,13(24):7106-7115.

Peng, Jing.,Hu, Bihua.,Li, Zhitong.,Lei, Zhiwei.,Zhong, Xiongwei.,...&Xu, Baomin.(2023).Boosting the dynamic reconstitution of FeCu-N₄ sites via doping of bimetal nanoparticles during oxygen electrocatalysis.CATALYSIS SCIENCE & TECHNOLOGY,13(24),7106-7115.

Peng, Jing,et al."Boosting the dynamic reconstitution of FeCu-N₄ sites via doping of bimetal nanoparticles during oxygen electrocatalysis".CATALYSIS SCIENCE & TECHNOLOGY 13.24(2023):7106-7115.